cummings



. @uiten `tetra atent @ft-im d. M. CUMMING-S AND Ni. L. CUMMINGS, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patrizi' No. 70,173, dated October 29, 1867; unfettered October 15, 1807. n

IMPROVED SHUTTER-BOWING BOLT.

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TO ALL WHOM IT MAY CONCERN:

Be it known thatwe, J. M. Comunes and M. L. CUnIMINes, of the city of Philadelphia, in the State of' Pennsylvania, have invented a new and useful Improvement in the Shuttenowing Bolt; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of thc same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a plane view of the front side of the bolt as it appears when the shutters (not shown) arc closed and fastened thereby.

Figure 2 a longitudinal central section of tig. 1, and

Figure 3 a like section of the bolt when in one ofits bowed conditions- Like letters of reference indicatingv the same parts when in the diii'erent gures.

The object of our improvement is to produce a fastening-bolt for window-shutters, whereby the latter can, as occasion-may require, be held rinly in any suitably bowed condition, without any liability to be opened by v any one from the outer side ofthe building-a mattei' of very great importance, and a security against thieves,

especially in city residences.

Our invention consists substantially, as hereinafter described and speciiied, in making the slide or bolt proper to have a T end jointed thereto, which can be operated with facility, in combinationy with the groove and a stop in the left-hand case of the bolt, `So as to allow the shutters to be either bolted when closed, or securely bowed, as occasion may require. And our Yinvention also consists substantially, as hereinafter described and speciiied, in making the thumb-andfinge piece of the slide or bolt proper adjustable in relation to the latter and to a slot in the right-hand case of the bolt, so as to aord the means for operating the said slide or bolt proper with facility, either in fastening or bowing the shutters. i

Referring to the drawings, A is the left-hand case of the bolt, B the'right-hand case, C the slide or bolt proper, c the T end of the said slide, and c the thumb-and-iinger piece ofthe same.

The part A of the case consists of a flat plate, a, having two cap-pieces a a attached or caston, so as to leave an open space between their upper inner sides and the plate a for the slide C, and also a'clear, open space a.from end to end, between the two said caps a, for the stem of the T piece c to move in when raised up, as shownjn figs. 1 and 2. i

' The part B of the case consists of allat plate, l, and a fixed cap-piece, b2, between which the slide C moves longitudinally. The cap b2 has two longitudinal slots b3 b4, the one, b4, for allowing the T piece e to betnrncd to thc right into it after the slide has been fully drawn back to open the shutters, and the other, Z13, for ai'ording the requisite space for the passage of the thumb-and-nger'piece-c in operating the slide C. There is also a through-hole and slot, la, in the plate ofthe case B, for the reception of the inner end of the piece c when the bolt is to be secured in a bowed condition, as will hereinafter be'described.

The T piece e of the slide C is `jointed to the end of the latter, and the two are made to be easily moved in the direction of their lengths, under the caps of the cases A and B, by means of the piece c, but the cross= piece of the T is longer than the width of the slide C, so that when the piece c is turned in upon the plate a', the cross on e catches against two stops (sce dotted lines 2 2, fig. l) in the right-hand end of the ease A, and thus prevcntsthe slide C from being further withdrawn, but if the piece c be first turned outward, as shown in figs. land 2, the slide C can then be readily withdrawn entirely from the case A, so as to allow the shutters to be fully or freely opened. i

The thumh-and-iinger piece c has a charnfered circular foot, 0', connected by a circular stem `which secures it so that it may be turned around freely in a corresponding hole in the slide C, and also so that it can be pushed inward sulicientlyto pass its foot c" through the round hole Zf" in the case'B, so as to allow'thc stem to slide along to the end of the slot of the said holeJf, as indicated in iig. 3, and thus prevent the slide C from being moved any further to the left. A small pawl or drop-pin, CZ, (see iig. 1,) drops its pointed end behind the end of thc slide when sl1ot, and keeps it in place, or locked. rlhe slide C is also notched in two or three places in its upper edge, for thc pawl tZ to catch in, so that various degrees of bowingr of the shutters maybe securely effected.

In the operation of this bolt, it will be readily seen that when the T piece c is turned outward, as shown in figs. 1 and 2, the slide C can be either moved into or out of the ease A, in fastening close or opening the shutters; that when the said piece (e) is turned down upon the plate a", it will stop the slide C, when drawn along, until its joint reaches a. little beyond the outer end of its ease A, where it will b'e arrested by the stops 2 Q, and allow the shutters to be bowed, as shown in iig. 3; that by the thumb-and-iinger piece c" the slotted hole b5, and the pawl fl, the slide C can be stopped in its case B, so as to secure various degrees of opening in bowing the shutters, and also that the shutters cannot be opened beyond the widest-bowed position or degree, from the buter side of the building, because the T piece cv cannot be detached from its case A until after the shutters have been elosed. l

Having thus fully described our improvement in the shutter-bowing bolt, what we-claim as new therein of our invention,v and desire to secure by Letters Patent, is confined to the following, viz I 1. We claim a shutter-bolt havingjointed to the cud of its slide C a T piece,l c', so as tof'operate in combination with the case A, substantially as and for the purpose described.

2. We also claim in-eombination with the slide C, having a jointed end, and operating in the case A, substantially as described, the adjustable thumb-and-inger piee'e e, and the slotted hole Zf in the plate B, substantially as and for the purpose set forth and described.

. J. M. CUMMINGS,

Witnesses: M. L. CUMMINGS.

BENJ. MonsoN, MICHL. RYAN. 

